Jonas Nick & Tim Ruffing, bitcoin researchers and contributors at Blockstream rejoin me on the show, this time to chat about half signature aggregation. This is a scaling technique that can help scale Bitcoin and enable more transactions inside a block or help with L2 protocols. We discuss:

How this idea came to be
What is half aggregation vs ‘full aggregation’?
What kind of savings are possible?
What are the downsides?
How would this work in practice?
Is a soft fork required?
Next steps for discussion, research, contributors

Links:

Twitter: @n1ckler
Twitter: @real_or_random
Blog post: Half-Aggregation of BIP 340 Signatures
CISA github: Cross-Input Signature Aggregation (CISA)
Half aggregation: Half-Aggregation of BIP 340 signatures

Previous Episodes

SLP222 Jonas Nick and Tim Ruffing What’s MuSig2? What Does it Mean for Bitcoin Multisig?
SLP321 On-chain scaling with Bitcoin Core Developers Pieter Wuille, Andrew Poelstra, Andrew Chow & Murch

Sponsors

Swan Bitcoin
Braiins.com
Voltage
Unchained Capital (code LIVERA)
CoinKite.com(code LIVERA)

Stephan Livera links:

Show notes and website
Follow me on Twitter @stephanlivera
Subscribe to the podcast
Patreon @stephanlivera

SLP400 Jonas Nick & Tim Ruffing - Half Signature Aggregation: What is it and how does it help scale Bitcoin?

Stephan Livera Podcast